package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author 05 2024/5/11
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

     @Autowired
     private OrderMapper orderMapper;
     @Autowired
     private OrderDetailMapper orderDetailMapper;
     @Autowired
     private AddressBookMapper addressBookMapper;
     @Autowired
     private ShoppingCartMapper shoppingCartMapper;
     @Autowired
     private UserMapper userMapper;
     @Autowired
     private WeChatPayUtil weChatPayUtil;
     @Autowired
     private WebSocketServer webSocketServer;
     private Orders orders = new Orders();
     @Value("${sky.shop.address}")
     private String shopAddress;
     @Value("${sky.baidu.ak}")
     private String ak;

     /**
      * 用户下单
      * @param ordersSubmitDTO
      * @return
      */
     @Transactional
     public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

          //1、处理各种业务异常（地址簿为空，购物车数据为空）
          AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
          if(addressBook == null){
               //抛出业务异常
               throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
          }

          //检查用户的收获地址是否超出配送范围
         checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());

          //查询当前用户的购物车数据
          Long userId = BaseContext.getCurrentId();

          ShoppingCart shoppingCart = new ShoppingCart();
          shoppingCart.setUserId(userId);
          List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
          if(shoppingCartList == null || shoppingCartList.size() ==0 ){
               //抛出业务异常
               throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
          }

          //2、向订单表插入1条数据
          Orders orders = new Orders();
          BeanUtils.copyProperties(ordersSubmitDTO,orders);
          orders.setOrderTime(LocalDateTime.now());
          orders.setPayStatus(Orders.UN_PAID);
          orders.setStatus(Orders.PENDING_PAYMENT);
          orders.setNumber(String.valueOf(System.currentTimeMillis()));
          orders.setPhone(addressBook.getPhone());
          orders.setConsignee(addressBook.getConsignee());
          //自行设置的地址
          orders.setAddress(addressBook.getDistrictName()+addressBook.getDetail());
          orders.setUserId(userId);

          this.orders = orders;
          orderMapper.insert(orders);

          List<OrderDetail> orderDetailList = new ArrayList<>();
          //3、向订单明细表插入n条数据
          for (ShoppingCart cart : shoppingCartList) {
               OrderDetail orderDetail = new OrderDetail();//订单明细
               BeanUtils.copyProperties(cart,orderDetail);
               orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单id
               orderDetailList.add(orderDetail);
          }

          orderDetailMapper.insertBatch(orderDetailList);
          //4、清空当前用户的购物车数据
          shoppingCartMapper.deleteByUserId(userId);

          //5、封装VO返回结果

          OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                  .id(orders.getId())
                  .orderTime(orders.getOrderTime())
                  .orderNumber(orders.getNumber())
                  .orderAmount(orders.getAmount())
                  .build();
          return orderSubmitVO;
     }

     /**
      * 订单支付
      * @param ordersPaymentDTO
      * @return
      */
     public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
          //当前登录用户id
          Long userId = BaseContext.getCurrentId();
          User user= userMapper.getById(userId);

          //调用微信支付接口，生成预支付交易单
//          JSONObject jsonObject = weChatPayUtil.pay(
//                  ordersPaymentDTO.getOrderNumber(),//商户订单号
//                  new BigDecimal(0.01),//支付金额，单位 元
//                  "苍穹外卖订单",//商品描述
//                  user.getOpenid() //微信用户的openid
//          );
//          if(jsonObject.getString("code") != null &&jsonObject.getString("code").equals("ORDERPAID")){
//               throw new OrderBusinessException("该订单已支付");
//          }
//          OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//          vo.setPackageStr(jsonObject.getString("package"));
//
          //通过websocket向客户端浏览器推送消息 type orderId content
//
//          Orders orders = orderMapper.getByNumberAndUserId(ordersPaymentDTO.getOrderNumber(), userId);
          Map map = new HashMap();

          map.put("type",1);//1表示来单提醒 2表示客户催单
          map.put("orderId",orders.getId());
          map.put("content","订单号：" + ordersPaymentDTO.getOrderNumber());
          String json = JSON.toJSONString(map);
          webSocketServer.sendToAllClient(json);

         JSONObject jsonObject = new JSONObject();
          jsonObject.put("code","ORDERPAID");
          OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
          vo.setPackageStr(jsonObject.getString("package"));
          Integer OrderStatus = Orders.TO_BE_CONFIRMED; //订单状态待接单
          Integer OrderPaidStatus = Orders.PAID;//支付状态 ，已支付
          LocalDateTime check_out_time = LocalDateTime.now(); // 更新支付时间
          orderMapper.updateStatus(OrderStatus,OrderPaidStatus,check_out_time,this.orders.getId());
          return vo;

     }

     /**
      * 支付成功，修改订单状态
      * @param outTradeNo
      */
     public void paySuccess(String outTradeNo) {
          //当前登录用户id
          Long userId = BaseContext.getCurrentId();

          //根据订单号查询订单
          Orders ordersDB= orderMapper.getByNumberAndUserId(outTradeNo,userId);

          //根据订单id更新订单的状态、支付方式、支付状态、转账时间
          Orders orders = Orders.builder()
                  .id(ordersDB.getId())
                  .status(Orders.TO_BE_CONFIRMED)
                  .payStatus(Orders.PAID)
                  .checkoutTime(LocalDateTime.now())
                  .build();

          orderMapper.update(orders);

          //通过websocket向客户端浏览器推送消息 type orderId content
//          Map map = new HashMap();
//
//          map.put("type",1);//1表示来单提醒 2表示客户催单
//          map.put("orderId",ordersDB.getId());
//          map.put("content","订单号：" + outTradeNo);
//          String json = JSON.toJSONString(map);
//          webSocketServer.sendToAllClient(json);

     }

     /**
      * 历史订单查询
      * @param pageNum
      * @param pageSize
      * @param status
      * @return
      */
     public PageResult pageQuery4User(int pageNum, int pageSize, Integer status) {

          //设置分页
          PageHelper.startPage(pageNum,pageSize);
          OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
          ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
          ordersPageQueryDTO.setStatus(status);

          //分页查询条件
          Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

          List<OrderVO> list = new ArrayList<>();

          //查询出订单明细，并封装入OrderVO进行响应
          if(page != null && page.getTotal() > 0){
               for (Orders order : page) {
                    Long orderId = order.getId();//订单id

                    //查询订单明细
                   List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                    OrderVO orderVO = new OrderVO();
                    BeanUtils.copyProperties(order,orderVO);
                    orderVO.setOrderDetailList(orderDetails);

                    list.add(orderVO);

               }
          }
          return new PageResult(page.getTotal(),list);

     }

     /**
      * 查询订单详情
      * @param id
      * @return
      */
     public OrderVO details(Long id) {
          //根据id查询订单
         Orders orders = orderMapper.getById(id);

         //查询该订单对应的菜品/套餐明细
          List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

          //将该订单及其详情封装到OrderVO并返回
          OrderVO orderVO = new OrderVO();
          BeanUtils.copyProperties(orders,orderVO);
          orderVO.setOrderDetailList(orderDetailList);
          return orderVO;

     }

    /**
     * 用户取消订单
     * @param id
     */
    public void userCancelById(Long id) throws Exception {

        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        //校验订单是否存在
        if(ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if(ordersDB.getStatus() > 2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        //订单处于待接单状态下取消 需要进行退款
        if(ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            //调用微信支付退款接口
            /* weChatPayUtil.refund(
                    ordersDB.getNumber(),//商户订单号
                    ordersDB.getNumber(),//商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(String.valueOf(ordersDB.getAmount())));//原订单金额*/
             //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        //更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }


    public void repetition(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();

        //根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //将订单详情对象转换成购物车对象
        //用stream流将list集合中每个元素拿出来 ，map方法里面放一个函数，这个函数应用于流中的每个元素
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            //将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;

        }).collect((Collectors.toList()));//使用Collectors.toList()方法，将生成的shoppingCart对象收集到一个列表中，并返回这个列表
        //将购物车对象批量添加到数据库

        shoppingCartMapper.insertBatch(shoppingCartList);


    }

    /**
     * 订单搜索
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        //部分订单状态，需要额外返回订单菜品信息， 将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        return new PageResult(page.getTotal(), orderVOList);
    }

    private List<OrderVO> getOrderVOList(Page<Orders> page){
        //需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if(!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                //将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes= getOrderDishesStr(orders);

                //将订单菜品信息封装到OrderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);

            }

        }
        return orderVOList;

    }

    public String getOrderDishesStr(Orders orders){

        //查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        //将每一条订单菜品信息拼接成字符串（格式：宫保鸡丁*3）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + '*' + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        //将该订单对应的所有菜品信息拼接在一起
        //将 orderDishList 列表中的元素连接成一个字符串,第一个元素为连接符
        return String.join("",orderDishList);
    }


    /**
     * 各个状态订单的数量统计
     * @return
     */
    public OrderStatisticsVO statistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        //将查询出的数据封装到orderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = OrderStatisticsVO.builder()
                .confirmed(confirmed)
                .toBeConfirmed(toBeConfirmed)
                .deliveryInProgress(deliveryInProgress)
                .build();
        return orderStatisticsVO;

    }

    /**
     * 接单（修改订单状态）
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        //订单志愿存在且状态为2（待接单）才可以拒单
        if(ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
//        if(payStatus == Orders.PAID){
            //用户已付款，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01)
//            );
//            log.info("申请退款：{}",refund);
//        }
        //拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);


    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if(payStatus == Orders.PAID)
        {
            /*
               //用户已支付，需要退款
            weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01)
            );

*/
        }
        //管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)
                .cancelReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);


    }

    /**
     * 派送订单
     * @param id
     */
    public void delivery(Long id) {
        //根据id获取订单
        Orders ordersDB = orderMapper.getById(id);

        //检验订单是否存在，并且状态为3
        if(ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);


    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(Long id) {

        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        //校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    public void checkOutOfRange(String address){
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败，请重试");
        }
        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");

        //店铺经纬度坐标
        String shopLngLat = lat + ","+ lng;

        map.put("address",address);

        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败，请重试");
        }
        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收获地址经纬度坐标
        String userLngLat = lat + "," +lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败，请重试");
        }
        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");

        }
    }


    /**
     * 客户催单
     * @param id
     */
    public void reminder(Long id) {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        //校验订单是否存在
        if(ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号：" + ordersDB.getNumber());

        //通过websocket向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));

    }


}
